The three Pokemon that are a Poison/Ghost Type are Gastly, Haunter, and Gengar that are in Pokemon Blue.
Gastly is a Ghost-Poison type Pokemon.
Gengar is a Ghost-Poison type.
Gengar is a ghost-poison type pokemon that evolves from Haunter.
It cures Poison from one Pokemon.
use ghost type on her phsycic and phsycic on her poison Pokemon
Fire, Fighting, Poison, Flying, Ghost and Steel.
To defeat ghost Pokemon use ghost or dark type moves. If youre fighting a ghost poison you can also use psychic type. normal and fighting types don't affect them but everything else will do normal damage to them
Poison is weak to ground and psychic type attacks. Ghost is weak to ghost and dark type attacks. The combination of poison and ghost is only found on the gengar evolution line, which gained an immunity to ground type moves, as of the third generation Pokemon games, due to it's ability: levitate.
Dark ghost and bug type moves
Fairy Pokemon are weak to Poison and Steel-type moves.
Ghost, but they're poison too
Gastly is a ghost/ poison type, so any psychic or ghost type will be super effective against it.